摘要
海洋表层沉积物中气相、液相、固相物质成分和物理化学参数能反映深部油气藏的分布,可作为油气化探指标。文中讨论了东海表层沉积物间隙水液态烃、成岩作用环境指标Fe3+/Fe2+ 、热释碳酸盐(△C)、沉积岩细粒级样品分离。选择了东海油气表层化探主要指标和参考指标。△C的矿物成分主要是铁锰的碳酸盐系列,东海沉积物△C矿物成分以菱铁矿为主。△C成因上的多解性决定了△C作为油气化探指标的局限性。
Abstract: Gas phase, liquid phase and solid phase material composition and physicochemical parameters of oceanic surface sediments reflect the distribution of deep oil and gas accumulations and thus can serve as indices for oil and gas geochemical prospecting. This paper deals with liquid hydrocarbon in interstitial water of surface sediments in the East Sea, diasenetic environmental index Fe3+/Pe2+, heat-release carbonates (?C) and fractionation of fine-grained sediment samples. Major parameters and referential indexes of surface geochemical pros-pectins for oil and sas in the East Sea have been chosen. Mineral composition of ?C is mainly of ferromanganese carbonate series, and ?C mineral composition of sediments in the East Sea is dominated by siderite. The existence of multiple solutions for the origin of ?C results in the limitation of ?C as an index of oil and gas geochemical prospecting.
出处
《物探与化探》
CAS
CSCD
1993年第2期98-101,共4页
Geophysical and Geochemical Exploration
关键词
石油
天然气
地球化学勘探
表层
Keywords: index of geochemical exploration, micropercolation.
